Show "Application Pane" on Completed task UI (BPM &UWL)

Hello Experts,

Can anyone please  help me out on this below scenario.

System : CE7.2

Workflow : BEPM & UWL

Scenario:

For New and In progress task we have Webdynpro custom UI to complete the task.

Now once the task is completed and we check complete task its shows us only the “Task title” area.

Out requirement is to show the “Application pane” also for completed task. 

Please let me know whether it is possible to achieve ? If yes , how ?

Thanks & Regards,

Sambaran